Clinical guide

IPL Aftercare: What to Tell a Client Before They Leave

IPL aftercare comes down to four instructions you can deliver in thirty seconds: keep the treated area out of the sun, keep it cool, leave it alone, and expect treated pigment to darken before it sheds. Most of what a clinic hears in week one isn't injury at all, it's clients who were never told what normal looks like. Here's the sheet to hand over and the follow-up call to make.

Day three is when the phone rings

The session runs twenty minutes. The worried message lands on Thursday.

Sit behind the desk of a busy salon after a Saturday of back-to-back light sessions and listen. Almost none of it is injury. It's the client whose sunspot went nearly black and thinks you've burned her, or the man whose treated hairs look like stubble and wants a refund. Expectation failures, both. A printed sheet and one call fix them, which makes post-treatment care the cheapest retention tool you own.

One disclaimer first. This page is educational material for people who buy and operate the equipment, not medical advice. Your treating clinician and your local regulator own the clinical protocol.

Normal, and how long each response runs

Staff and clients need the same vocabulary. Without it, every ordinary reaction becomes a callback. Our E-Light operation manual and the IPL patient protocol handout in our engineering archive log these reactions with time windows attached.

What the client notices	Usual time course	Where the figure comes from
Sunburn-like sting, mild to moderate redness	About 2 to 5 hours	Our IPL patient handout
Discomfort, swelling and redness generally	Minor, 1 to 3 days	AAD
Prolonged redness and swelling	Possible up to about 4 days	Our IPL patient handout
Spotty, inflamed look around follicles after a hair pass	2 to 24 hours	Our IPL patient handout
Treated vessels turning purple, area puffy	Settles in 1 to 3 hours, vessels lighten over 3 to 10 days	Our E-Light manual
Treated pigment darkening, then shedding	Darkest by around 72 hours, flakes off within 7 to 28 days by body area	Our E-Light manual and patient handout
Treated hair appearing to grow, then falling	2 to 4 weeks, then a hair-free stretch of roughly 3 to 6 weeks	Our IPL patient handout

Two operator notes hide in that table. Our E-Light manual says the reaction on darker or sensitive skin can arrive 24 to 48 hours late, and warns operators not to push energy up because the immediate response looked flat. It adds a hard trigger: if redness hasn't cleared inside 1 to 3 hours, cool the area now.

Cooling deserves more respect than it gets. Our skin fundamentals training manual asks for roughly twenty minutes of cold compress after a pass: heat is still sitting in the tissue, and carrying it out lowers risk. The AAD agrees a cool compress helps. Skin stays heat-sensitive for about two days, so hot showers are out.

Kill one bad habit while you're at it. Cold gel is a coupling medium whose job is carrying the chill of the sapphire window into the epidermis during the pass. Our light and tissue interaction material is blunt about smearing it on afterwards: pointless.

Sun protection outranks everything else on the sheet

If a client remembers exactly one instruction, make it this one.

You just heated melanin on purpose. Feeding UV to an inflamed chromophore is the fastest route back to the problem you were hired to fix. Our skin fundamentals manual notes that UVA passes through glass, reaches the upper dermis and is a main aggravating factor for pigmented lesions, while UVB damages keratinocyte DNA and drives post-inflammatory pigmentation. Freshly treated skin resists all of it less well.

The AAD gives you a number you can print: broad-spectrum, SPF 30 or higher, water-resistant, reapplied roughly every two hours or after swimming. No direct sun on treated skin, no tanning bed. Our archive protocol sets a floor of SPF 15 after an E-Light session. That's a floor, not a target.

Selling into a sunny market? Bundle sunscreen with the course. A run of pigment and photorejuvenation treatment that a client undoes on a beach in July becomes your fault in the review, not hers.

Heat, sweat, products, makeup

Print the rest. Don't recite it at the door, hand it over.

Heat, first three days. Our post-light protocol keeps direct and indirect heat off the area for three days. No sauna, no steam room, no facial steaming, and cool-water washing for anyone prone to pigmentation.
Water and cleansing. Skip hot water on the area. Our E-Light manual allows a mild cleanser from about 2 to 3 days out.
Exercise. Sweat, friction and a warm treated area make a poor combination on day one. Hold heavy training until the redness is gone.
Products, first week. No exfoliation, scrubs, soaps or foaming cleansers, and nothing marketed as whitening or anti-spot. Bland and hydrating only.
Makeup. Once the sting and flush have settled, mineral makeup on intact skin is reasonable. Never over crusting or broken skin.
Injectables and facials. Fillers or other injections into the treated area wait a fortnight. Salon facials wait until about day ten.
Acne clients. When sebum surfaces at days 2 to 3, extractions stay off the table until the reaction resolves.
Hair clients. Shave between sessions, never wax. Pulling hair out by the root removes the target the next hair reduction appointment needs. Our patient handout bars root removal across the course, and asks hair-removal clients not to wax, tweeze or pluck for four weeks before a treatment.

What actually warrants a call back

Draw the line clearly and your therapists stop guessing.

Darkening of a treated spot is normal, and it can go almost black before it flakes away. Crusting is normal too, with one absolute attached: nobody picks it, it sheds on its own or it scars. Blisters are rare, usually settle within about two hours with ice, and must never be pierced. Past that you're in clinical territory, which isn't a therapist with a tub of gel.

Print this list where staff can see it. Blistering that spreads or persists. Erosions that won't heal. Honey-coloured crusting or purulent discharge, the bacterial pattern the StatPearls laser complications chapter describes. Painful erosions inside a week, which can be herpes simplex reactivation and is why cold sores near the treatment area call for antiviral cover beforehand. Pigment still deepening at two weeks. Redness worsening rather than fading past day four.

Pigment risk belongs in the consultation, not the complaint. Post-inflammatory hyperpigmentation runs more common and more severe in Fitzpatrick types III to VI. Epidermal cases usually lighten over 6 to 12 months, while dermal pigment improves slowly and may never fully fade. Our patient handout says it in client language: delayed dark patches lasting two weeks to a year, white patches with the potential to be permanent, higher risk on darker skin. The AAD is plain that some colour changes don't reverse. Get that into the consent form. And any lesion nobody was sure about should have gone to a clinician for assessment or biopsy before a single pulse.

The sheet, and the call that follows it

A working aftercare sheet has six blocks on one side of A4. What we treated today. What's normal, with hours and days attached. What to do tonight: cool compress, bland moisturiser, no heat. What to avoid, and for how long. What to phone about, in language a nervous person can parse. Then the rebooking date and a number a human answers.

Localise it. Clinic name on top. A sheet that reads like a manufacturer's disclaimer gets binned in the car park.

Then make the call. Forty-eight to seventy-two hours out, ninety seconds, and it's the highest-return thing a clinic does with light equipment. You intercept the two questions that would otherwise become a one-star review, confirm the pigment is behaving, and rebook while she still remembers why she came. Nervous on Tuesday, repeat client by Friday.

Building operator training and consent paperwork from scratch is harder than it looks. Our installation and operator support covers protocol alongside the hardware.

Questions buyers ask

Is aftercare different for hair removal and pigment work?

Sun rule and heat rule are identical. What changes is the paragraph describing normal. Hair clients get a spotty follicular reaction lasting 2 to 24 hours, then treated hairs that appear to grow for 2 to 4 weeks before shedding, followed by roughly 3 to 6 hair-free weeks. Pigment clients get darkening that peaks around 72 hours and sheds over 7 to 28 days. One sheet, two swappable middles.

Does contact cooling cut the aftercare burden?

It cuts pain during the pass and protects the epidermis, which is why our IPL platforms including the MF-05 use a sapphire contact-cooled window. Our light and tissue interaction material lists three benefits: epidermal protection, less discomfort, and headroom to drive useful fluence deeper. What cooling can't touch is UV exposure or pigment biology in the days after. Treat it as a safety feature, never a substitute for the sheet.

How long should skin stay red before we call it a problem?

Most redness is minor and clears inside 1 to 3 days per the AAD, and our patient handout allows prolonged redness and swelling out to about four days. Past that window, or any time it's worsening instead of fading, it stops being an expected reaction and needs clinical assessment. Blistering, non-healing skin, discharge or spreading pain are same-day calls.

Can a tanned client just be treated at a lower setting?

No. Extra epidermal melanin competes for the same light, raising the odds of blistering and dyspigmentation, and recent sunburn sits on the contraindication list in our patient handout. That handout asks for four weeks without sun or solarium before treatment, plus one to two weeks without fake tan. Reschedule instead, and use the delay to teach the sun rule. A client who waits a month is cheaper than one with a permanent white patch.

Evidence & further reading

Educational material for equipment selection and operator training. It is not medical advice, a treatment protocol or a promise of clinical outcome.

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